Why C# not allowing multiple inheritence

1.C# is not allowing the multiple inheritance because of the below reason.

public class A

{

public virtual int m()

{

return 10;

}

}

public class B : A

{

public override int m()

{

return 20;

}

}

public class C : A

{

public override int m()

{

return 30;

}

}

public class D : B, C

{

//If C# supports multiple inheritence.

//then from which class ( B or C) the method will be inherited

//This is where compiler gets confusion.

//that is the reason why C# not supporting multiple inheritence.

public void test()

{

}

}